Using WSH and RxJS

example.js

function include (jsFile) {
  var fso = new ActiveXObject("Scripting.FileSystemObject"); 
    f = fso.OpenTextFile(jsFile),
    s = f.ReadAll();
  f.Close(); 
  return s; 
}

eval(include('C:\\GitHub\\RxJS\\dist\\rx.all.compat.js'));

Rx.Observable.timer(0, 1000).take(3).subscribe(function (x) {
  WScript.StdOut.WriteLine(x.toString());
})

output.bash

$ cscript wsh.js
Microsoft (R) Windows Script Host Version 5.8
Copyright (C) Microsoft Corporation. All rights reserved.

0
1
2

Wish, most undervalued technology in windows.